Lock.



I. III. ANDERSON, In.

LOCKI APPLICATION `FILEIJ IuNE 20. |911.

L. Patented Jan.29,191&'

INVENTOR TOM vIVI. ANDERSON, JR., OF KNOXVILLE, TENNESSEE, SSIGNOR OFONE-THIRD T0 GEORGE W. MAYER, OF HARRIMAN, TENNESSEE.

v LOCK.

Specicaton of Letters Patent.

Patented Jan. 2o', 1ers.

Application led June 20, 1917. Serial No. 175,898.

T 0 all w/wm it may concern:

Be it known that I, Toit MfANnnnsoN, Jr.. a citizen of the United Statesresidino 7 D at Knoxville iu the countv of Knox and 7 u Another objectof the invention residesv in the provision ot' a simple and practicalscreen door lock having' a sliding spring pressed bolt to engagelockingly with a hook mounted on the door, said bolt being easilyrcleasable from the hook when free to slide.

The invention also aims to generally improve fasteners of this nature torender .them more practical, reliable and commercially desirable.

lVith these and other objects in view as will become more apparent asthe description proceeds, the invention consists in certain novelfeatures of construction, combination and arrangement of parts as willbe hereinafter fully described, illustrated and claimed.

In the drawing,

Figure 1 is a view showing the lock coacting with a screen door.

F ig. 2 is a sectional view through the device between the sides thereofshowing the lock mechanism.

Fig. 3 is a sectional view on the plane of line 3-3 of Fig. l, and

Fig. 11' is a detail perspective view of the keeper.

Referring in detail to the drawings by numerals, l designates a doorcasing, and 2 a screen door. While I have shown my locking means appliedto a screen door, it

will be understood that I do not wish to be limited to this applicationbut may use the device for securing other movable members. The lock 3comprises a casing which is secured in position by attaching arms 1.Within the casing is mounted a sliding bolt 5 which extends outwardlythrough the side edge wall 6 of the casing through the opening 7therein. The bolt is formed with a longitudinal slot 8 through whichextends a stud 9 on which the bolt slides. The slotted head portion ofthe bolt is somewhat larger than the remaining shank portions and formsabutments for the expansive helical spring 10 which encircles the shank.The inner end of the bolt is formed with a nose or catchjllwhich slidesunder and across the' hook opening 12 in the top wall 13 of the casing.The upper edge let of the nose or catch is inclined as shown. Y

An arm 15 is formed integrally with thel head of the bolt, dependstherefrom and has a lateral extension 16. at its lower end,whichextension is adapted to be engaged by the bill 17 of a revolubledog 18 having' a hub 19 formed wit-h a square key opening 20. The dog 1srevolubly mounted between the side walls of the casing, which sidewallsr have openings registering with the opening 20. The hub extendsinto the opening` in the rear side wall 2l of the casing whereas thefront side wall or cover wall 22 is dished inwardly around the openingto tit into the concave side of the keeper and to furthermore provide aguide to the key hole.

A dislodging pin 23 extends slidably through openings in the top wall 13and bottom wall 24 of the casing and is held normally in an elevatedposition by ther spring 25.

The swinging door carries la hook or hasp 26 having a slotted tongue 27and a finger hold 28. The hasp or hook may be secured to the door byany-suitable means such as the screw eye 29 which permits the hook toswing.

The hook may be secured to the lock by simply inserting its slottedtongue into the opening 12, which movement will cause the bolt to firstretract and then snap into the slot in the tongue. lVhen the hook ispositioned to engage the bolt, the vdislodging pin 23 is depressed. Nowto disengage the hook,-sim ply pull on the protruding portion of thebolt shank to remove the nose or spur 11 from the slot'in the tonguewhereupon the dislodging pin will force the tongue out of the lockcasing. The dog 18 may be turned by the key 30 to engage the arm 15 andhold the bolt against retraction.

Vhile I have shown and described the preferred embodiments of myinvention, it will be clearly understood that I do not wish to belimited to this construction, butmay make such changes as will fallwithin the scope and spirit of the invention as claimed.

l/Vhat I claim is 1. The combination in a lock of `a casing formed inone side with a slot, said casing further formed with an opening spacedapart from said slot, a spring-pressed bolt slidably mounted in saideasing, said bolt having a nose normally extending across said slot, aspring-pressed dislodging pin mounted within the casing and having oneend projecting outwardly through said opening, and a hook adapted to besecured to a movable member, said hook having a tongue adapted forentering said slot and engaging with the nose of said bolt, said hookfurther having a portion adjacent said tongue adapted to engage againstsaid dislodging pin, whereby said hook will be entirely displaced fromsaid slot when disengaged from said bolt.

2. rlhe combination in a lock of a casing formed in one side with aslot, said casing further formed with an opening spaced apart` from saidslot, a shank on the bolt extending outwardly through said casingwhereby the bolt may be manually actuated, a spring-pressed boltslidably mounted in said casing, said bolt having a nose normallyextending across said slot, a spring-pressed dislodging pin mountedwithin the easing and having one end projecting outwardly through saidopening, and a hook adapted to be secured to a movable member, saidhook` having a tongue adapted for entering said slot and engaging withthe nose of said bolt, said hook further having a portion adjacent saidtongue adapted to engage against said dislodging pin, whereby said hookwill be entirely displaced from said slot when disengaged 'rom saidbolt.

ln testimony whereof I affix my signature.

TOM M. ANDERsoN, JR.

Copies of this patent may be obtained forve cents cach, by addressingthe Commissioner of yatents,

Washington, D. C.

